Gilberto Nunez: "I wasn't there ...what do you want me to tell you?" HD

In police interview video, Ulster, N.Y., Det. Michael Thomas and Investigator Joseph Aureimma Jr., look into the November 2011 death of Thomas Kolman, accusing his best friend, dentist Gilberto Nunez, of murder. "48 Hours" correspondent Richard Schlesinger has more on the case in "Death and the Dentist" airing Saturday, April 8 at 10 p.m. ET/PT on CBS. "48 Hours" investigates the most intriguing crime and justice cases that touch on all areas of the human experience including greed and passion. For 27 seasons, "48 Hours" has developed a rich history of original reporting and impact journalism that has helped exonerate wrongly convicted people, caused cold cases to be reopened and solved, and along the way changed lives. Check local listings for "48 Hours" broadcast times.